1.0 GENERAL
Dual Cylinder Electronic
Scale
The scale shall be an Eagle Microsystems Model DCS3O2 Dual Cylinder
Electronic Scale suitable for weighing two (2) compressed gas cylinders
having a maximum diameter of 12 inches I 30 cm.
1.1 WORK SPECIFIED ELSEWHERE
The scale base shall be
anchored to the floor by the contractor with 3/8" dia. mounting
hardware.
1.2 START UP I OPERATION
Installation shall be
accomplished without the need for special tools or liffing devices.
Start up, calibration and operation of the scale shall not require the
services of the manufacturer, however, assistance shall be available
from a factory trained, local representative if required.
2.0 DESCRIPTION
The scale shall be
comprised of a floor mount dual cylinder weighing base and a remote
mount dual channel electronic indicator furnished complete with 15 ft./
3 m. interconnection cable. The entire weighing system shall weigh less
than 35 lbs. /16 kg for ease of installation.
2.1 COMPONENTS
2.1.1 SCALE BASE
The weighing platform
shall be a non-corrosive, high impact base, protected by 5 year
warranty, suitable for weighing two (2) compressed gas cylinders having
a maximum diameter of 12 inches/ 30 cm.. Scale base shall incorporate
two independent reliable lever Systems to transmit each cylinders
quantified chemical weight to its dedicated environmentaly sealed load
cell.
Load cells shall be
temperature compensated 0 to 150.0 F I 0 to 65.0. Systems incorporating
hydraulic load cells shall not be acceptable. All scale electronics,
including the load cells, shall be enclosed in a NEMA 4X enclosure.
Maximum height of scale base (excluding electronics enclosure)
shall not exceed 1.6 in.i 4.1 cm.
2.1.2 ELECTRONIC INDICATOR
The electronic indicator
shall be a two (2) channel device, with each channel providing an
operating display of 0 to 150 lbs (or 0 to 68 kg.), and individual
electronic tare weight adjustments of 0 to 100 lbs (or 0 to 45 kg.),
rated for a total maximum capacity of 360 lbs /162 kg per channel.
Display resolution shall be in 0.2, 0.5 or 1 lb. (0.1 or 0.5 kg.)
increments providing an accuracy of 0.25 %of rated capacity. The
electronic indicator shall provide a digital display of gross, tare,
used remaining and total weights per channel. 15 ft. 5 m of
interconnection cable shall be furnished as standard, however, the
indicator shall be capable of remote mounting to a distance of 1000 ft.
/300 m.
3.0 WARRANTY
The entire scale shall be
covered by the manufacturers Standard Warranty, which shall include the
entire assembly for one (1) year from date of start up. The scale base
shall be protected by an extended warranty for a minimum of five (5)
years, which will provide warranty repair or replacement if the scale
base is damaged through corrosive exposure.
4.0 POWER SUPPLY
The scale shall operate
from a 120 VAC, 60 hz (other) power supply.
5.0 OPTIONS
5.1 OUTPUTS I RELAYS
5.1.1 Optional RS485 OUTPUTS
5.1.2 LOW WEIGHT ALARM CONTACT (Optional - use if low weight alarm
required)
The electronic indicator
shall provide a total of two (2) low weight alarm contacts. Each contact
shall be rated at 1 amp @ 120 VAC and dedicated to the channel measured.
5.1.3 SERIAL OUTPUT (Optional - use if digital communication is
required.)
The electronic indicator
shall provide two (2) R8232 serial ouputs, each dedicated to the channel
measured.
5.2 WALL BRACKET (Optional - use in areas subject to seismic
activity.): $100
A dual cylinder wall mount bracket shall be furnished, including
safety chains and clips for securing two vertical compressed gas
cylinders.
